we are at san francisco general. she talked to the victim's son tonight. >> reporter: it was emotional, at times he broke down in tears, he lost his mother. police, as you said, are saying it appears the driver was drunk. >> reporter: tonight the family is still in shock. her only son had taken her and his two friends to the hospital about 9:00 p.m. last night. they were walking when a car sped towards them and hit them. >> headlights in front of me. jumped over the wall. and after i stand up i can't find my mom. she gone. >> reporter: his mother and friends plummeted 30 feet down the hillside. >> i call their names. i heard my friend's voice. his wife's voice but not my mom's. no response. >> reporter: his friends were badly injured. when he found his mother he knew no one could save her. >> i hold her in my arm. i called for help. >> reporter: she died last night that hospital. police found a mangled car nearby. we were there as police arrested the driver and passengers. >> i know my right said. >> reporter: we lea